Хелп,пожалуйста помогитеUse the present perfect continuous and for or since for

Хелп,пожалуйста помогите

Use the present perfect continuous and for or since for each pf the following situations.

e. Carol's father began learning Kazakh 7 months ago. He is still learning Kazakh.

........................................................ for 7 months.

f. Dmitry started learning Kazakh a year ago. He is still learning it.

Dmitry ........................................................ since last year.